My husband has never not supported my writing, but there was a time he didn't seem interested. I know how draining it can be to lack motivation because of lack of support. My husband has since come around, and reads my posts. I hope yours does as well. <3

There are opportunities on Medium. You CAN make money. I don't see why he would be opposed to this hobby vs. any other hobby. At least with this one, you have the potential to make money. What would he rather you be doing?